I've seen frames crack there, even when they haven't been crashed. Any lug area can be overheated and weakened during brazing if the person doing the brazing isn't careful. The lug-edge is a stress riser, and if the metal is brittle from overheating, it may not take much out-of- the-ordinary stress (heavier rider, bumpy roads, riding off a curb, etc) to start some cracks forming. Often these cracked frames are ridden for 20+ years before the problem becomes obvious, but it would make me nervous every time I went for a ride.
On Jul 14, 7:16 pm, Kelly <[email protected]> wrote: > I bought my new Quickbeam several weeks ago and I love it. However, > while building it up I noticed a few hairline cracks in the paint > under the top head lug. This is weird, as the rest of the bike is in > perfect condition. The cracks are raised from the surface of the > paint and are like little ridges. So the question, should I be > worried? > > Here is a pic: > > http://tiny.cc/CCrye > > or here: > > http://www.flickr.com/photos/31296...@n07/3722235822/in/set-721576196... > > You can also see some other pictures of the completed bike. > > Thanks, Kelly. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en -~----------~----~----~----~------~----~------~--~---
